According to The Japanese Times newspaper, there are an estimated 70,000 Muslims in Japan, out of which 90% are male resident foreigners coming mainly from Indonesia, Pakistan, Iran and Bangladesh, and 10% are Japanese. Many of the Japanese Muslims are women who converted to Islam through their marriage to Muslim men.Muslims in Japan often encounter the problem of finding halal food products that are permissible according to Islamic law. These products usually exclude pork, alcoholic beverages, and also refer to the method used in animal meat preparation. Women, both foreign Muslims and Japanese Muslims, also face the issue of wearing the hijab, a cloth cover that covers different amounts and areas of the woman depending on individual interpretation, teachings, cultural backgrounds, etc.Though there have been several instances of harassment towards Muslims in Japan, it appears that these incidents are gradually decreasing through time.

Japanese in Japanese are very friendly, you may suffer a little friendly laughs by the ladies. But, it is tolerable. Outside the major cities, most of the Japanese havn't seen foreigns before. The religion in Japan is buddhism, That's all I can think of..... Most importantly is: Japanese in Japan speak only Japanese, you may have the language barrier.